(1) Though two companies are assisting us on this, the problem remains unsolved .(2) The largest unsolved problem for the policy-makers, however, is what to do about financial institutions.(3) A self-confessed optimist, he says that having unsolved problems is what makes life interesting.(4) Over the same period, Strathclyde had 47 detected crimes and 38 unsolved crimes.(5) But even with modern software tools, a number of unsolved geometric problems remain.(6) There are some unsolved mysteries and unusual happenings in this case.(7) The mystery remains unsolved , essentially, and it is up to the reader to decide which voice he or she wants to listen to.(8) With a population of just over 100,000, it has had 20 unsolved murders in the past 30 years.(9) And the civil liberties issues highlighted by the information commissioner this week remain unsolved .(10) Her death came in the midst of a series of unsolved disappearances and killings in the Auxerre region over the past three decades.(11) Police are still trying to trace mobile phones which they believe hold the key to two unsolved murder investigations in the city.(12) It is the third arrest as part of a police operation using new DNA technology to reinvestigate unsolved sexual assaults.(13) The mountain of unsolved cases would also be largely consigned to history and give so many traumatised people the peace of mind they crave.(14) Many believed that the smooch was contrived for the camera but the identities of the sailor and the nurse have remained an unsolved mystery.(15) With medicine you always start with an unsolved medical problem.(16) Discomfort is the major unsolved problem with protective clothing.